xref: /linux/drivers/dma-buf/dma-buf-sysfs-stats.h (revision ea68a3e9d14e9e0bf017d178fb4bd53b6deb1482) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * DMA-BUF sysfs statistics.
4  *
5  * Copyright (C) 2021 Google LLC.
6  */
7 
8 #ifndef _DMA_BUF_SYSFS_STATS_H
9 #define _DMA_BUF_SYSFS_STATS_H
10 
11 #ifdef CONFIG_DMABUF_SYSFS_STATS
12 
13 int dma_buf_init_sysfs_statistics(void);
14 void dma_buf_uninit_sysfs_statistics(void);
15 
16 int dma_buf_stats_setup(struct dma_buf *dmabuf, struct file *file);
17 
18 void dma_buf_stats_teardown(struct dma_buf *dmabuf);
19 #else
20 
dma_buf_init_sysfs_statistics(void)21 static inline int dma_buf_init_sysfs_statistics(void)
22 {
23 	return 0;
24 }
25 
dma_buf_uninit_sysfs_statistics(void)26 static inline void dma_buf_uninit_sysfs_statistics(void) {}
27 
dma_buf_stats_setup(struct dma_buf * dmabuf,struct file * file)28 static inline int dma_buf_stats_setup(struct dma_buf *dmabuf, struct file *file)
29 {
30 	return 0;
31 }
32 
dma_buf_stats_teardown(struct dma_buf * dmabuf)33 static inline void dma_buf_stats_teardown(struct dma_buf *dmabuf) {}
34 #endif
35 #endif // _DMA_BUF_SYSFS_STATS_H
36